Electric soaking pit



July 2.1, 1925. 1,546,535

l. F. BAILY ELECTRI C SOAKING PTI' Original Filed March 18 1924glnvcuroz Thaddeusf. Badly /ta e (1Mo: neg

Patented July 21, 1925.

UNITED STATES 1,546,535 PATENT OFFICE;

THADDEUS F. BAILY, OF ALLIANCE, 01H10.

ELECTRIC SOAKING PIT.

Continuation of application Serial No. 700,003, led March 18, 1924. Thisapplication l'ed December 17, 1924. Serial No. 756,450.

To all lwhom. t may concern.'

Be it known that I, THADDEUs F. BAILY,

a citizen ot the United States, residing at Alliance, in the county ofStark and State '5 of' Ohio, have invented certain new and usefulIn'iprovexnents in Electric Soaking Pits,

of whichvthe followino' is a specification.

This invention relates to electrically heated soaking pits and the like,and is a continuation of the common subjectmatter of my copendingapplication Serial No. 700,003, filed March 18, 1924.

The objects of the invention are to pro vide a gas tight soaking pitheated by an electric resistor trough exposed to the atmosphere of t-heheatin chamber, an arched baille wall being provided in the heatingchamber, spaced from the main side wall of the pit and from the top andbottom thereof, the resistor trough being sup-ported at opposite'sidesupon said baffle wall and the main side wall of the p-it.

The above and other objects may be attained by constructing the pit inthe manner illustrated in the accompanying drawing, in which- Figure 1is a transverse sectional view through a soaking pit embodying theinvention; and I Fig. 2, a plan sectional view of the pit, upon a,smaller scale.

Similar numerals refer to similar parts throughout the drawing. l

The pit is built of suitable refractory material, built below the levelof the floor, and comprises the bottom l, preferably having Cab theinclined portions 2, alo-ng each side, and

the side walls 3, which may be inclined for a portion of their height asshown at 4 and then arched as at 5.

An arched baille wall 6 is provided along each side of the pit, spacedfrom thejadjacent main side wall and vfrom the top and bottom of thepit.. The resistor troughs 7 are provided along the sides of the pit,for

heating the same. l

Each trough is formed of carbon lsilicide or other suitable highlyrefractory material,

' preferably arched transversely as sho-wn in Fig. l, and supported atopposite sides' upon the adjacent main side wall and baiiie wall. T'hetrough thus assists in supporting the baffle wall and as each bafflewall is provided 1 r with a beveled face disposed ayey from the "5trough, it will be seen that a relieving space is provided upon eachside of each trough, and flared from the bottom toward the top thereof.

The only point of contact between the trough and the walls is at thebottom of the trough, thus providing for radiation of the heat from allsides of the trough and preventing damage to the portions of the sideand baille walls which are adjacent thereto.

Each trough is filled with a granular, carbonaceous material indicatedat 8, electrodes 9 extending into opposite ends of the trough, wherebythe current passing through the carbonaceous material, between the electrodes, heats the trough to the desired temperature.

The pit is divided into a plurality of holes by the partitionwalls 10,formed of suitable refractory material and extending from top to bottomof the pit, between the baille walls 6.

A sand trough 11, may be provided. around the upper edge of each hole toreceive the depending flange l2 formed around the edge of each cover 13.

Coke breeze or, other granular carbon shown at 14 is placed in thebottom of the pit to provide al non-oxidizing atmosphere and to supportthe ingots.

In charging the soaking pit the cover is removed from the hole to becharged and the ingots shown at 15, are charged through the open top ofthe hole and placed, in u right position as illustrated, upon the co ebreeze covering the bottom of the hole.

After the hole is charged the cover 1s placed thereon, the sand sealproviding a gas tight hole in which the ingots are soaked, and the bathewalls prevent the insistor throughs while at the same time permittingcomplete radiation from the troughs in all directions I claim 1. Anelectric soaking pit including a baf- 100 fle wall extending across theside of the working chamber and spaced from the roof and bottom and mainside wall of the pit, and a resistor trough supported at opposite sidesupon the vmain side wall and bale wall. 2. An electric soaking pitincludingv a baille wall extending across the side of thev workingchamber and spaced from the roof and bottom and main side wall of thepit, and a transversely arched resistor trough supported at oppositesides upon the main side Wall and balile wall.

3. An electric soaking pit including an arched baille Wall extendingacross the side of the Working chamber and spaced from the roof andbottom and main side wall of t-he pit, and a resistor trough supportedat opposite sides upon the main side-wall and baffle Wall.

4. An electric soaking pit including a baille Wall extending across theside of the Working chamber and spaced from thel roof and bottom andmain side wall of the pit, and a resistor trough supported at oppositesides upon the main side Wall and bafiie Wall and contacting therewithonly at its bottom portion.

5. An electric soaking pit including a baille Wall extending across theside of the working chamber and spaced from the roof' and bottom andmain side Wall of the pit, and a resistor trough supported at oppositesides upon the main side Wall and baffle Wall, the upper portion of saidtrough being spaced from said side and baffle Walls.

6. An electric soaking pit including a baile Wall extending across theside of the Working chamber and spaced from the roof and bottom and mainside wall of the pit, and a resistor trough supported at opposite sidesupon theI main side Wall and baffle Wall, said side and baille wallsbeing inclined away from the trough from the bottom toward the topthereof. y

7. An electric soaking pit including a bafie wall extending across eachside of the working chamber and spaced from the roof and Vbottom andmain sidewalls of the pit, a resistor trough supported at opposite sidesupon each main side wall and baille wall, and transverse partition wallslocated between the baille Walls.

8. A closed ty e, gas tight furnace chamber including carbonaceouselectric resistance units exposed to the atmosphere of the heatingchamber, and a loose carbonaceous material upon the bottom of theheating 'chamber to support ingots to be heated and to ing chamber, anarchedV bottom resistor v trough extending lengthwise of the pit andparallel to the baiiie Wall, one end of the arch resting upon the mainside Walland the other against the batlle Wall.

10. A soaking pit of the character de#- scribed including 4a baille Wallextendin across the end of the working chamber an spaced from the roofand bottom and main side Wall of the pit anda resistor trough supportedat opposite sides upon the main side Wall of the pit and the bale Wall.

11. A soaking pit of the character d escribed including a baffle Wallextending across the end of the Working chamber and spaced from the roofand bottom and main side Wall of the pit and an arched resistor troughsupported at opposite sides upon the main side Wall of the pit and thebaffle Wall.

12. A soaking pit oftthe character described including a bale Wallextending across the end of the Working chamber and spaced from the roofand bottom and main side Wall of the pit and a resistor trough supportedat opposite sides upon the main side wall of the pit and the baflleWall, that part of the. baflle Wall and main side wall adjacent to thevertical Walls of the trough being spaced from the upper portions ofsaid trough walls to provide relieving spaces for the heat from saidtrough Walls.

In testimony have hereunto subscribed my name.

'rHApDEUS F. BAILY.

that I claim the above, I

